BOSTON — Federal prosecutors asked a judge Monday to bar Boston Marathon bombing suspect Dzhokhar Tsarnaev from seeing some of the gruesome autopsy photos of the three people killed in the attack.

In a court filing, prosecutors said Tsarnaev, 19, should only be allowed to look at autopsy photos that will be used during his trial and potential sentencing and should not be permitted to view the many other photos that will not.

“Allowing photos of the mutilated bodies of the victims to be viewed by the man accused of mutilating them would needlessly revictimize the family members,” prosecutors wrote.

Miriam Conrad, one of Tsarnaev’s lawyers, declined to comment.